Formula For Finding Roof Pitch

This page offers you the rise and run formula to find the pitch slope angle of the roof of a building.

Formula for finding roof pitch.

How to measure roof pitch. The pitch of this roof is 4 8 12. Divide the slope by two to get the pitch. Roof pitch formula image 1 12 to 12 12 roof pitch 7 12 pitch this is our pitch calculator which will convert pitch to angle or angle to pitch for half degree roof slope calculations.

Slope measures the angle of change in elevation which can be obtained by dividing rise by run and multiply the result with 100. Rafter rise run from the pythagorean theorem. Roof pitch calculator results explained slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run. The pitch value can be obtained by dividing n by 12 and divide s by the answer.

Here are a couple examples. Use the following formula which also describes a right triangle. Roof slope is also called as roof pitch. If you do need to calculate the pitch an estimate or shortcut is usually more practical than measuring the roof s overall dimensions.

48 10 4 8. The angle or pitch of a roof is calculated by the number of inches it rises vertically for every 12 inches it extends horizontally. Generally roof pitch is calculated from the same formula that describes a right triangle. This is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares.

You can also calculate roof pitch even without using a roof slope calculator. You can use the following equations to find the length of the rafter and the slope. How to calculate roof pitch. Tan a rise y1 run x our sketch above shows how we calculate the roof rise per horizontal foot 12 inches of run when we are given the roof slope in degrees or as the roof pitch or angle expressed in degrees the purple sloped line is the sloping roof surface.

For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally. In the imperial unit of measurements the slope is expressed with the rise and run. It is computed by using the simple roof slope formula. Now divide the rise by the multiplier to get the pitch eg.

The calculator above can handle much of this math. By slope angle formula steepness can be obtained by dividing vertical rise by horizontal span. For example a roof that rises 6 inches for every 12 inches of horizontal run has a 6 in 12 pitch. In civil engineering the slope is the numerical measure of the steepness of a roof.

Rise run pitch where pitch is expressed in percent.